Do not echo fatal messages in GCB on krel compilation
Do not echo fatal messages in GCB on krel compilation

Google Cloud build does not copy the `.git` directory after clone, which
means we cannot run git commands during the compilation of the release
tools. To not spam the logs with `fatal` messages, we now set the git
commit and version to `unknown` in that case.

Signed-off-by: Sascha Grunert <70ab469ddb2ac3e35f32ed7c2fd1cca514b2e879@suse.com>

kubernetes/release,kubernetes/release